Last update Aug. 6, 2017



Safe substance and/or breastfeeding is the best option.

A 14-amino acid synthetic peptide related to the endogenous guanylin peptide family.
Administered in moderate-severe constipation from irritable bowel syndrome and in idiopathic chronic constipation.

It acts locally in the intestine, without being absorbed (EMA 2016). It is metabolized in the intestine obtaining its main active metabolite, des-tyrosine. Both linaclotide and des-tyrosine are digested by intestinal enzymes and transformed into natural amino acids.

Since the last update we have not found any published data on its excretion in breast milk.

Its pharmacokinetic data (zero or negligible intestinal absorption with undetectable plasma levels and high molecular weight) make it very unlikely that significant amounts will pass to breast milk (EMA 2016).


Suggestions made at e-lactancia are done by APILAM team of health professionals, and are based on updated scientific publications. It is not intended to replace the relationship you have with your doctor but to compound it. The pharmaceutical industry contraindicates breastfeeding, mistakenly and without scientific reasons, in most of the drug data sheets.

Jose Maria Paricio, Founder & President of APILAM/e-Lactancia

Your contribution is essential for this service to continue to exist. We need the generosity of people like you who believe in the benefits of breastfeeding.

Thank you for helping to protect and promote breastfeeding.

José María Paricio, founder of e-lactancia.

Other names

Linaclotide in other languages or writings:


Linaclotide belongs to this group or family:


Main tradenames from several countries containing Linaclotide in its composition:


Variable Value Unit
Oral Bioavail. 0 %
Molecular weight 1.527 daltons


  1. EMA. Linaclotida. Ficha técnica. 2016 Full text (in our servers)
  2. EMA. Linaclotide. Drug Summary. 2016 Full text (in our servers)
  3. Müller-Lissner S. Pharmacokinetic and pharmacodynamic considerations for the current chronic constipation treatments. Expert Opin Drug Metab Toxicol. 2013 Abstract

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